Operating Segments (Reconciliation Of Reportable Segments Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 125,884	$ 152,558
South African Transaction Processing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	34,463	60,292
International Transaction Processing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	39,387	46,022
Financial Inclusion And Applied Technologies [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	52,034	46,244
Reportable Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	130,342	166,772
Reportable Segment [Member] | South African Transaction Processing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	37,749	66,437
Reportable Segment [Member] | International Transaction Processing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	39,387	46,022
Reportable Segment [Member] | Financial Inclusion And Applied Technologies [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	53,206	54,313
Inter-Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	(4,458)	(14,214)
Inter-Segment [Member] | South African Transaction Processing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	(3,286)	(6,145)
Inter-Segment [Member] | Financial Inclusion And Applied Technologies [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ (1,172)	$ (8,069)